A lightweight, flexible, and highly efficient energy management strategy is a requisite for future flexible electronics. Herein, hollow polypyrrole/cellulose hybrid hydrogels featured with biphase porous structures, are firstly designed by in-situ implanting a hollow and continuous polypyrrole conducting network into porous cellulose hydrogels. Such hollow hybrid hydrogels show good mechanical strength and flexibility, enabling its ability to bear severe mechanical deformation without structural damage. Within the hybrid hydrogel, cellulose hydrogel acts as an interior electrolyte reservoir to host movable ions, biphase porous structure offers path for electrolyte ions, and hollow polypyrrole network is responsible for the electrochemical performance. As a result, a symmetrical supercapacitor assembled with the hollow hybrid hydrogels delivers optimized capacitive properties with a high specific capacitance, a good rate capability, and an enhanced cycling stability. Moreover, no evident loss in capacitance of the device is observed even bended at 180°. This work provides a design of flexible, low-cost, environmental-friendly and high-performance electrode materials for energy conversion and storage systems.

轻便，灵活且高效的能源管理策略是未来灵活电子产品的必要条件。在此，首先通过原位设计具有双相多孔结构的中空聚吡咯/纤维素杂化水凝胶。将中空连续的聚吡咯导电网络植入多孔纤维素水凝胶中。这样的中空杂化水凝胶显示出良好的机械强度和柔韧性，使其能够承受严重的机械变形而不破坏结构。在杂化水凝胶中，纤维素水凝胶充当内部电解质储存器以容纳可移动离子，双相多孔结构为电解质离子提供路径，而空心聚吡咯网络负责电化学性能。结果，与中空混合水凝胶组装的对称超级电容器可提供具有高比电容，良好的倍率能力和增强的循环稳定性的优化电容性能。而且，即使弯曲180°也没有观察到器件电容的明显损失。